1.

3x + 4y = 24, 20x - 11y = 47

Answer»

3x+4y=24......(1) 20x-11y=47.....(2)multiply equation (1) with 11and equation (2) with 4 33x +44y= 26480x-44y=168add both the equationswe get, 113x=432x= 3.824y=47-3x4y=47-3(3.82)4y=35.54y=8.88



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